Detecting device and display device

Abstract

A detecting device comprising: a plurality of detection electrodes extending in a first direction along a substrate and disposed apart from each other in a second direction orthogonal to the first direction; and a plurality of dummy electrodes provided between the detection electrodes, wherein the detection electrodes have a plurality of openings, the openings of the detection electrodes are arrayed in a triangular grid, the dummy electrodes are arrayed in a triangular grid, an end of each of the detection electrodes in the second direction has: a plurality of recesses; and a plurality of protrusions.

What is claimed is: 
     
       1. A detecting device comprising:
 a plurality of detection electrodes extending in a first direction along a substrate and disposed apart from each other in a second direction orthogonal to the first direction; and 
 a plurality of dummy electrodes provided between the detection electrodes, wherein 
 the detection electrodes have a plurality of openings, 
 the openings of the detection electrodes are arrayed in a triangular grid, 
 the dummy electrodes are arrayed in a triangular grid, 
 an end of each of the detection electrodes in the second direction has:
 a plurality of recesses each formed into a circular arc shape along a first virtual circle having the same diameter as the diameter of the opening of the detection electrode and recessed toward inside of the detection electrode; and 
 a plurality of protrusions each formed into a circular arc shape along a second virtual circle having the same diameter as the diameter of the dummy electrode and protruding toward outside of the detection electrode, the recesses and the protrusions being alternately and continuously formed in the first direction, 
 
 the first virtual circle and the second virtual circle are alternately arrayed in the first direction, 
 the second virtual circle is tangent to two of the first virtual circles adjacent to each other in the first direction, 
 the first virtual circle and two of the openings are disposed in a triangular grid, and 
 the second virtual circle and two of the dummy electrodes are disposed in a triangular grid, 
 a height of the triangular grid of the first virtual circle and the two of the openings is greater than at least one of:
 a height of an isosceles triangular grid of two of the first virtual circles and the second virtual circle; and 
 a height of an isosceles triangular grid of two of the second virtual circles and the first virtual circle. 
 
 
     
     
       2. The detecting device according to  claim 1 , wherein
 the openings of the detection electrodes are arrayed in an equilateral triangular grid, and 
 the dummy electrodes are arrayed in an equilateral triangular grid. 
 
     
     
       3. The detecting device according to  claim 1 , wherein the first virtual circle and the two openings are disposed in an equilateral triangular grid. 
     
     
       4. The detecting device according to  claim 1 , wherein the second virtual circle and the two dummy electrodes are disposed in an equilateral triangular grid. 
     
     
       5. The detecting device according to  claim 1 , wherein
 the first virtual circle and the two openings are disposed in an equilateral triangular grid, and 
 the second virtual circle and the two dummy electrodes are disposed in an equilateral triangular grid. 
 
     
     
       6. A display device comprising:
 the detecting device according to  claim 1 ; 
 a display part; and 
 a color filter provided on a display surface of the display part, wherein 
 the color filter includes a first color filter provided in a first sub-pixel region, a second color filter provided in a second sub-pixel region, and a third color filter provided in a third sub-pixel region, the first color filter, the second color filter, and the third color filter being arrayed in order from one side to the other in the first direction, and 
 the first color filter, the second color filter, and the third color filter are each disposed with the color filter in the same color being adjacent thereto in the second direction. 
 
     
     
       7. A detecting device comprising:
 a plurality of electrodes having a plane parallel to a substrate, wherein 
 the electrodes each have a rectangular shape surrounded by a plurality of ends, 
 each of the ends has:
 a recess having a circular arc shape along a first virtual circle and recessed from outside toward inside of the plane; and 
 a protrusion having a circular arc shape along a second virtual circle and protruding from inside toward outside of the plane, 
 
 the recess and the protrusion are formed alternately and continuously along each of the ends of the electrode, and 
 the first virtual circle is tangent to the second virtual circle adjacent to the first virtual circle, at a tangent point. 
 
     
     
       8. The detecting device according to  claim 7 , wherein the shapes of the ends of the electrode are symmetric with respect to a center point of the electrode. 
     
     
       9. A display device comprising:
 the detecting device according to  claim 7 ; and 
 a display part. 
 
     
     
       10. The detecting device according to  claim 7 , wherein
 a center of the first virtual circle, the tangent point, and a center of the second virtual circle adjacent to the first virtual circle are aligned.